#pragma GCC target("avx2")
#pragma GCC optimize("O3")
#pragma GCC optimize("unroll-loops")
#include<iostream>
#include<string>
#include<stdlib.h>
using namespace std;
using i32 = int_fast32_t;
using i64 = int_fast64_t;
#define rep(i, n) for (i32 i = 0; i < (i32)(n); i++)
#define all(a) (a).begin(),(a).end()
#define rall(a) (a).rbegin(),(a).rend()
using P = pair<i64,i64>;

int main(){
ios::sync_with_stdio(false);
std::cin.tie(nullptr);
string s;
cin >> s;
i64 n;
i64 ans = 0;
if(s.size() == 1){
    ans = (s[0] - '0');
}
else{
    ans = (s[s.size() - 2] - '0') * 10 + (s.back() - '0');
}
if((ans % 4 == 0 && ans != 4) || (ans % 2 != 0 && ans != 1)){
    cout << 1 << endl;
}else{
    cout << -1 << endl;
}
}